In the $50 to $150 range, you start to see boxes with a better variety of packs, including some from more sought-after sets
In terms of power, this new mechanic technically sits between its predecessors, but the mechanics strength is rarely the deciding factor
What competitive formats is Deep-Cavern Bat played in
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Using the test I provided here I think we can hone in on whether or not a card will become a staple or be thrown into a binder
However, that was just reprinting six cards, and there are hundreds of new cards in the 40k commander decks - not to mention that the Astartes, Necron and Tyranid creature types are part of Games Workshop's intellectual property, so presumably can't be reused without their license.